Git

Manual

Download zip/tarball from GitHub repository and extract to project directory (actually, only src/nazarpc/CSTester.php file is needed,
so, you can extract only this one file (for CLI mode, for HTML copy includes directory).

How to use?

Put into root directory of the project test.php with such content (assumed composer is used, otherwise include src/nazarpc/CSTester.php file in any possible way):